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Mod | | | Forums66 Topics128,024 Posts1,055,395 Members48,422 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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For helping keep this great
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#15022 06/02/2003 5:01 AM | Joined: Jun 2003 Posts: 156 Shop Shark | | Shop Shark Joined: Jun 2003 Posts: 156 | Hi....Newbie here..just bought a 59 F/S,w/235, driver..Have been told I need to use a gas additive,because of the unleaded gas...Is that right? and if so, what do You suggest...Thanks in advance
"All right, they're on our left, they're on our right, they're in front of
us, they're behind us...they can't get away this time"
Lt Gen. Lewis B."Chesty" Puller, USMC
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#15023 06/02/2003 5:37 AM | Joined: Jul 2001 Posts: 3,887 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Jul 2001 Posts: 3,887 | no, not necessary - I've put about 40,000mi on a 57 235 w/ unleaded, no probs, and have run lots of old 283's, 327's w/ unleaded - story is the valve seats may wear a bit faster being not-hardened, but nobody seems to think it really affects longevity - when ya get yer motor rebuilt, ask for hardened seats and welcome to the garage, where yer every puzzle can be solved eventually!!  Bill | | |
#15024 06/02/2003 5:43 AM | Joined: Jan 2002 Posts: 2,839 'Bolter | | 'Bolter Joined: Jan 2002 Posts: 2,839 | I agree with squeeze. I switched my 235 over to Chevron mid grade once leaded became no longer and have no problems.
Craig My '50 Chevy 3100 5 window, '62-235cu, 3:55 rear My truck ....... Respect The Rust If I'm not working on my truck, '65 m00stang or VW camper, I'm fishing with the wife or smoking Salmon.
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#15025 06/02/2003 9:01 AM | Joined: May 2001 Posts: 49 Member | | Member Joined: May 2001 Posts: 49 | Can you still get the lead replacement gas additive? I went looking for it about a year ago and couldn't find any.
And welcome to the board!
Charlie
Rustzilla, '41 Chevy 1/2 ton pickup
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#15026 06/02/2003 1:23 PM | Joined: Jun 2003 Posts: 156 Shop Shark | | Shop Shark Joined: Jun 2003 Posts: 156 | Thanks to ALL for the quick responses.
One less thing to have to worry about..I have another question, but maybe a new post would be in order....THANKS AGAIN
"All right, they're on our left, they're on our right, they're in front of
us, they're behind us...they can't get away this time"
Lt Gen. Lewis B."Chesty" Puller, USMC
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#15027 06/03/2003 12:15 AM | Joined: Jun 2000 Posts: 2,773 'Bolter | | 'Bolter Joined: Jun 2000 Posts: 2,773 | I will chime in with advice to use the additive. I've had experiences with valves burnt in engines that have not used the additive, but no problems with burnt exhaust valves when the additive has been used on a continuous basis. It doesn't cost much if you buy it at wal-mart in the big bottle.
Fred
52 3600
69 C-10
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